v2.4.0.8

Supplemental Disclosures of Consolidated Statements of Cash Flows (Details) (USD $) In Thousands, unless otherwise specified | 6 Months Ended
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Jun. 30, 2013 | Jun. 30, 2012
Non-cash financing and investing activities [Abstract] |  |
Unrealized gain (loss) on foreign currency exchange contracts | $ (1,248) | $ 1,139
Unrealized loss on available-for-sale securities | (286) | (42)
Property and equipment | $ (10) | $ 692

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